Supreme Star is the largest world within the Immortal Sect, not only vast without bounds but also a shopping paradise. With enough money, you can buy anything from low to medium-end products. However, Meng Yu didn't use money; he used Spirit Stones.
Merchants absolutely didn't ask about the origins of the Spirit Stones. After all, what you were buying were things like Spirit Rice, alcoholic beverages, Spiritual Medicines, furniture, daily necessities, and so on. Whatever you wanted, they could provide!
There are many great things in the Immortal Sect, such as the various Spiritual Medicines Meng Yu purchased this time. Even millennium-aged ones weren't too expensive in the Immortal Sect—if you had Spirit Stones.
Many families had existed for thousands of years. They cultivated, bred, and developed many different projects. The investments made by generations long past would yield profits for their descendants dozens of generations later in a continuous harvest.
